James henry fogarty



No. 752,898. PATENTED FEB. 23, 1904.

J. BOG-ARTE I SEGTIONAL WHEEL FOR POWER TRANSMISSION.

APPLICATION FILED DEC. 5, 1903.

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UNITED STATES Patented February 23, 1904. i

PATENT OFFICE.

"JAMES HENRY FOGARTY, OF NEW YORK, N. Y..

'SECTIONAL WHEEL FOR POWER TlRANSiVI-ISSION- SPECIFICATION forming partof Letters Patent No. 752,898, dated February 23, 1904.

My invention relates to an improvement in sectional wheels, particularlythose of the gear type, and has for its object the production of a wheelspecially economical in con-- struction, durable and reliable inoperation, and the rim or face of which is readily and quickly renewablewithout disturbing the hubbody in its position upon the power axle orshaft.

Certain of my improvements consist in providing the hub-body of thewheel with a circumferential receptacle for a sectional rim consistingof a vertical flange-face, an angular flange-face, and a clearancegroove or pocket between said faces to permit of a free inward movementof the mating flange-faces of the sectional rim and a close contact ofthe faces.

Other improvements consist in providing one or more wedge-bolts andadapting them as a means for drawing the flange-faces of the rim andhub-body to a close contact as well as for receiving and transmittingthe thrust in either direction from the rim to hub-body without slip,slide, or jar when starting, stopping, or reversing under severe loadsand conditions.

In the accompanying drawings, Figures 1 and 2 represent elevations ofopposite sides of a gear-wheel embodying my improvements,

Application filed December 5, 1903. Serial No. 183,914. (No model.)

A designates the central hub-body, designed, preferably, to be forced onby hydraulic pressure or keyed to the shaft after the usual methods. 7

B designates a plurality of sections or segments forming the rim of agear-wheel embodying my improvements. The ready and prompt removal andreplacing of the wheelrim without disturbing the hub-body is at alltimes desirable and necessary withoutdisturbing the alinement of thehub-body or its shaft or axle. It is therefore made in a plurality ofsections or segments to be banded or secured about the hub-body.

C designates 'bolts and lugs by means of which the plurality ofrim-sections are brought together and tightened to a snug fit and graspabout the hub-body. As shown in the drawings, the wheel rim is dividedinto three sections or segments ofone hundred and twenty degrees each.Any number of sections may be used of equal or unequal length to suitthe facilities for applying the same or the number of teeth on thewheel-face.

The hub-body and combined rim-sections are provided with mating joint orflange faces a and Z2, so located with reference to each other that asthe rim-sections are drawn together inwardly to surround, clamp, andgrasp the faces of the hub-body they move inwardly over theperpendicular-face a and are forced to a contact and pressure by thewedge action of the angular joint-face b, readily effecting a close fitand snug contact between the hubbody and rim portions of the wheel.

As a special means for securing a'free and ready movement of therim-sections to a close contact with the hub portion or body, a pocket0, extending circumferentially about the whole circle of rim-joint, islocated between and at the apex of the angle formed by the perpendicularand angular faces a and 6, Fig. 3, of the joint. Without this pocket 0the turning and facing of the joint-faces is troublesome and expensiveand a secure and properlyclosed jointing of the faces is almostimpracticable; but with it, even if the angular faces are not quite thetrue fit that they should be, the pull of the bolts will readily bringthe perpendicular faces to a close fit, the free movement of therim-flange toward and into pocket 0 overcoming the slight disadvantagesof a chance misfit of the joint.

To secure a promptand reliable transmission Without check or jar, therim sections or segments are provided with wedge-bolts D, tapered toeffect a pressure by one side against the rim metal and by the otherside against the hub metal, thus jamming the joint to a completefixture, whereby any pressure acting on the rim-sections is promptlytransmitted without slip, slide, or jar to the hub-body and its shaft.(See Fig. 5.) To secure a best possible usefulness of the wedge-boltsand a greater and more efficient contact between the faces of thewedge-bolts D and those of the rim and hub, a tongue lug d is projectedfrom the metal of the rim-face through the metal of the hub-face, and asecond tonguelug cl is projected from the metal of the hubface throughthe metal of the rim-face, as detailed in Figs. 3 and 4. The screwing upand tightening of the wedge-bolts D effects a pressure through theirtapered sides in opposite circumferential directions against the metalsof both rim and hub-body, rendering the whole combination solid, stiff,and strong, as well as drawing the two perpendicular faces together to astill closer contact. The wedge-bolts being brought to a tight jam thebolts at C may be screwed up to'a final jam for a complete setting ofthe wheel and rim as a whole. By locating the wedge-bolts D at eachendof the rim-sections instead of one at the center, as shown, bolts andlugs C may be omitted; but the method shown is the more economical asrequiring less fitting and adjustment.

What I claim as new, and desire to secure by Letters Patent, is g 1. Asectional wheel comprising a sectional rim and a hub-body, each of whichis provided with perpendicular and oblique contact-faces, and one ofwhich is provided with a clearancepocket located at the apex of theangle formed by the said contact-faces, substantially as set forth.

2. A sectional wheel comprising a sectional rim and a hub-body, each ofwhich is provided with perpendicular and oblique contact-faces and oneof which is provided with aclearancepocket located at the apex of theangle formed by the said contact-faces, and a plurality of wedge-boltstapered to press in opposite circular directions against the metals ofboth rim and hub-body, substantially as set forth.

JAMES HENRY FOGARTY.

Witnesses:

WM. H. WEIGHTMAN, HENRY J. WEHLE.

